Characterization of plasma current quench during disruptions at HL-2A

作     者：竹锦霞 张轶泼 董云波 HL-2A Team 

作者机构：School of Intelligent ManufacturingSichuan University of Arts and ScienceDazhou 635000People'sRepublic of China Southwestern Institute of PhysicsChengdu 610041People's Republic of China 不详 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2017年第19卷第5期

页      面：1-5页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 082701[工学-核能科学与工程] 0827[工学-核科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：partially supported by National Natural Science Foundation of China(No.11375004) the National Science and Technology Major Project of the Ministry of Science and Technology of China(No.2014GB109003) 

主　　题：tokamak disruption current quench 

摘      要：The most essential assumptions of physics for the evaluation of electromagnetic forces on the plasma-facing components due to a disruption-induced eddy current are characteristics of plasma current quenches including the current quench rate or its waveforms. The characteristics of plasma current quenches at HL-2A have been analyzed during spontaneous disruptions. Both linear decay and exponential decay are found in the disruptions with the fastest current ***, there are two stages of current quench in the slow current quench case. The first stage with an exponential decay and the second stage followed by a rapid linear decay. The faster current quench rate corresponds to the faster movement of plasma displacement. The parameter regimes on the current quench time and the current quench rates have been obtained from disruption statistics at HL-2A. There exists no remarkable difference for distributions obtained between the limiter and the divertor configuration. This data from HL-2A provides basic data of the derivation of design criteria for a large-sized machine during the current decay phase of the disruptions.